Combined drill transport and connecting trolley



Feb. 24, 1931.

c. H. H. LUND 1.794983 COIBINED DRILL TRANSPORT AND CONNECTING TROLLEY Filed Nov. 11. 1929 In zre nto r: C i fiopher-flenrz'kl lbelfeidt ZYmd Eta s.

Patented Feb. 24, 1931 CRIS'IOPHER I-IENRIK HOELFELDT LUND, OF STEINKJER, NORWAY, ASSIGNOR TO A/S HOELENG, OF TRON DI-IJ EM, NORWAY COMBINED DRILL TRANSPORT AND CONNECTING TROLLEY Application filed November 11, 1929, Serial No.

In connection with the excavating work carried out in tunnels etc, the drilling machine on the different places where drilling takes place has to be connected with the stationary pressure air and water conduits of the tunnel.

The connection between the drilling machines and the stationary pressure air and water conduits usually is efiected by means of flexible hoses, one end of which is connected to the stationary air and water conduits, whereas the other end is connected to the respective drilling machines.

ach time a drilling machine is moved to a new place it is therefore necessary to disconnect the flexible connecting hose at two points. and also the flexible hoses are very much exposed to wear by being pulled along the bottom of the tunnel.

In accordance with the present intent on the connecting tubes for air and water to the drilling machines are permanently connected with the hollow shaft of reels for the flexile air and water hoses, by means of which the drilling machine is connected with the permanent conduits.

ne end of the flexible hoses wound on the reels permanently connected with a branch tube extending laterally from the hollow shaft of the reel, and a suflicient number of reels are mounted on a transport trolley carryin the connections for the drilling machine and being at the same time adapted for the transport of drills and other accessories.

he advantages of the said combined drill transport and connecting trolley mainly lies therein that the flexible hoses are always carried by the trolley so as to be less exposed to wear, and on the other hand a saving of time eflected owing to the fact that the flexible hose does only need to be disconnectsand connected at one point each time the drilling machine is moved from one place to another.

On the drawing an embodiment of the in vention is illustrated. Fig. 1 is a longitudinal view through the combined transport and connecting trolle whereas Fig. 2 is a rear view of the trolley.

In accordance with the embodiment illustrated, the trolley comprises two pair of been moved to the place where 406,439, and in Norway September 26, 1929.

8. with a there is wheels 1, 2, carrying a frame work platform l. On the platform 4 mounted a suitable frame work 5, with shelves etc. for carrying drills and accessories, and also supporting two winding reels 6, 7 for the flexible connecting hoses. Said winding reels are provided with tubular shaft-s 8, 9 having branches 10, 11 for connection to the inner ends of air and water hoses, the free ends of which are adapted to be connected with the permanent air and water conduits in the tunnel.

The tubular shafts 8, 9 through suitable packing boxes l2, 13 are connected with stationary air pressure and water pipes 14, 15 mounted on the frame work 5, and provided with connecting elements indicated at 16 in Fig. l for being connected to the drilling machine.

V W hen the trolley carrying the hose reels has the drilling machine is going to operate, it is only necessary to unwind so much of the hoses from the respective reels as is sullicient to connect the free ends of the said hoses with the nearest connecting point of the permanent pressure air and water conduits.

laim:

A transport and connecting trolley for tunnel drilling machines comprising a Wheel base a frame carried by said wheel base, shelves upon said frame for the drilling; ma chines and accessories, reels carried by said frame having tubular shafts, stationary air and water pipes also mounted upon said frame, said stationary air and water pipes being; permanently connected at one end to said tubular shafts and being); adapted to be connected at their free ends with a drilling machine and means connecting said tubular shafts with the inner ends of air and water hoses wound upon said reels. 7

In testimony whereof I affix my signature.

C. H. HOELFELDT LUND.

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